/* SarcoCalc – Professional medical, white + light green, responsive */

:root {
  --color-white: #ffffff;
  --color-bg: #f8fcf9;
  --color-green-light: #e8f5e9;
  --color-green: #2e7d32;
  --color-green-dark: #1b5e20;
  --color-text: #1a1a1a;
  --color-text-muted: #424242;
  --color-border: #c8e6c9;
  --shadow-soft: 0 2px 8px rgba(46, 125, 50, 0.08);
  --shadow-hover: 0 4px 16px rgba(46, 125, 50, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --font-size-base: 18px;
  --font-size-heading: 1.5rem;
  --font-size-title: 1.75rem;
  --line-height: 1.6;
  --space: 1.25rem;
  --space-lg: 2rem;
  --touch-min: 44px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & logo */
.site-header {
  background: var(--color-white);
  box-shadow: var(--shadow-soft);
  padding: var(--space) var(--space);
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space);
  flex-wrap: wrap;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-align: left;
  flex-shrink: 0;
}

.site-logo {
  display: block;
  max-width: 400px;
  width: auto;
  height: auto;
  max-height: 110px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-title {
  margin: 0;
  font-size: var(--font-size-title);
  font-weight: 600;
  color: rgb(6, 84, 139);
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.header-btn {
  display: inline-block;
  padding: 0.4rem 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-green);
  text-decoration: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: background 0.2s ease, color 0.2s ease;
  min-height: var(--touch-min);
  line-height: 1.4;
  box-sizing: border-box;
}

.header-btn:hover {
  background: var(--color-green-light);
  color: var(--color-green-dark);
}

/* Main content */
.main-content {
  flex: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space);
  width: 100%;
}

.main-content--policy {
  max-width: 680px;
}

.page-heading {
  font-size: var(--font-size-heading);
  color: var(--color-green-dark);
  margin: 0 0 var(--space-lg);
  font-weight: 600;
}

/* Home: Understanding section */
.intro-section {
  margin-bottom: var(--space-lg);
}

.understanding-section {
  background: var(--color-green-light);
  border-radius: var(--radius);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-soft);
}

.section-heading {
  font-size: var(--font-size-heading);
  color: var(--color-green-dark);
  margin: 0 0 var(--space);
  font-weight: 600;
}

.understanding-section p {
  margin: 0 0 var(--space);
}

.understanding-section p:last-child {
  margin-bottom: 0;
}

/* CTA section */
.cta-section {
  text-align: center;
  padding: var(--space-lg) 0;
}

.cta-subtitle {
  margin: 0 0 var(--space);
  color: var(--color-text-muted);
  font-size: 1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  min-height: var(--touch-min);
  padding: 0.75rem 1.5rem;
  font-size: 1.125rem;
  font-family: inherit;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  color: var(--color-white);
  background: var(--color-green);
  border: none;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn:hover {
  background: var(--color-green-dark);
  box-shadow: var(--shadow-hover);
}

.btn:focus {
  outline: 2px solid var(--color-green);
  outline-offset: 2px;
}

.btn-submit {
  width: 100%;
  margin-top: var(--space-lg);
}

@media (min-width: 480px) {
  .btn-submit {
    width: auto;
    min-width: 200px;
  }
}

/* Quiz form */
.quiz-section {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
}

.assessment-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 600;
  color: var(--color-green-dark);
  font-size: 1rem;
}

.form-group input,
.form-group select {
  min-height: var(--touch-min);
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  max-width: 100%;
}

.form-group input:focus,
.form-group select:focus {
  outline: 2px solid var(--color-green);
  outline-offset: 0;
}

.field-message {
  font-size: 0.95rem;
  color: #b71c1c;
}

.field-message.error {
  color: #b71c1c;
}

/* Question blocks (Q1–Q5) */
.question-block {
  margin: 0;
  padding: var(--space);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
}

.question-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 0.75rem;
  padding: 0;
  float: none;
  width: 100%;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: normal;
  cursor: pointer;
  min-height: var(--touch-min);
}

.radio-label input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  accent-color: var(--color-green);
}

/* Result */
.result-container {
  padding: var(--space-lg);
  background: var(--color-green-light);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.result-heading {
  margin: 0 0 0.5rem;
  font-size: var(--font-size-heading);
  color: var(--color-green-dark);
}

.result-text {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

/* Privacy policy */
.policy-section {
  margin-bottom: var(--space-lg);
}

.policy-heading {
  font-size: var(--font-size-heading);
  color: var(--color-green-dark);
  margin: 0 0 0.75rem;
  font-weight: 600;
}

.policy-section ul {
  margin: 0 0 var(--space);
  padding-left: 1.5rem;
}

.policy-section p {
  margin: 0 0 var(--space);
}

.policy-section a {
  color: var(--color-green);
  text-decoration: none;
}

.policy-section a:hover {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  background: var(--color-white);
  padding: var(--space) var(--space-lg);
  text-align: center;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.site-footer a {
  color: var(--color-green);
  text-decoration: none;
  font-size: 1rem;
  margin: 0 0.75rem;
}

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer a:first-child {
  margin-left: 0;
}

/* Mobile-first responsiveness */
@media (max-width: 479px) {
  .site-header,
  .main-content {
    padding-left: var(--space);
    padding-right: var(--space);
  }

  .header-inner {
    flex-direction: column;
    align-items: center;
  }

  .logo-container {
    flex-direction: column;
    text-align: center;
  }

  .quiz-section {
    padding: var(--space);
  }

  .btn {
    width: 100%;
    display: block;
  }

  .site-footer a {
    display: block;
    margin: 0.5rem 0;
  }
}

@media (min-width: 600px) {
  :root {
    --font-size-base: 19px;
    --font-size-heading: 1.65rem;
    --font-size-title: 2rem;
  }

  .site-logo {
    max-width: 400px;
    max-height: 110px;
  }
}

@media (min-width: 768px) {
  .site-logo {
    max-width: 440px;
    max-height: 120px;
  }
}